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Finding the Fourth Proportional to 64,699.56, 88,703.10 and 63,518.58

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Solution

The fourth proportional to 64,699.56, 88,703.10 and 63,518.58 is: 87,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,699.56 : 88,703.10 = 63,518.58 : x
  2. Step 2: Convert to fraction form
    64,699.56/88,703.10 = 63,518.58/x
  3. Step 3: Cross multiply
    64,699.56x = 88,703.10 × 63,518.58
  4. Step 4: Simplify right side
    64,699.56x = 5,634,294,953.60
  5. Step 5: Solve for x
    x = 5,634,294,953.60/64,699.56
  6. Step 6: Final answer
    x = 87,083.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.